Annual report pursuant to Section 13 and 15(d)

Income Tax (Details)

v2.4.0.6
Income Tax (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Reconciliation of income tax attributable to operations      
Income taxes at statutory rates (at a rate of 34% for all periods presented) $ (7,152) $ (4,989) $ (5,298)
Expenses not deducted for tax purposes (1,212) (2,366) 425
Effect of tax rate changes on deferred tax assets and liabilities         
Reduction in benefit of operating losses 15 16 1,939
Reduction in the benefit of other tax attributes 551 468 394
Impact of withholding tax     (3,000)
Foreign exchange effect on valuation allowance     (534)
Investment tax credits (485) (588) (252)
Research and development tax credits         
Change in valuation allowance 6,324 6,175 2,620
Part VI.I tax deduction         
Book to tax return adjustments 287 (42) 92
Other         
Income tax expense     (3,000)
Canada [Member]
     
Reconciliation of income tax attributable to operations      
Effect of tax rate changes on deferred tax assets and liabilities $ 1,672 $ 1,326 $ 614